

The Next Generation of Home Heating Protection

Fuel Additives for Ultra-low Sulfur Fuels & Biodiesel Blends
Maintaining the Integrity of Home Heating Fuel in Every Season
Advanced Fuel Solutions’ HeatDoc™ conditioners combine multiple fuel stabilizers, a corrosion inhibitor, a yellow metal deactivator, and a dispersant to deliver cleaner fuel and year-round storage protection. By treating home heating fuel with HeatDoc™, distributors can offer their customers a superior product that improves heating efficiency, reduces heating bills, and extends the life of their heating systems.


Fewer Unscheduled Service Calls. Increased Customer Satisfaction. Enhanced Brand Loyalty.
Our customized diesel and gasoline fuel additives keep your equipment running cleaner, smoother, and longer. Explore our product suite below and click through to learn how each formula can unlock the full potential of your fuel systems.
HeatDoc™ ASC is an all-season fuel additive that protects indoor storage tanks, providing efficient, reliable heat when it’s needed most. Formulated for modern, ultra low-sulfur and biodiesel-blended fuels.



HeatDoc™ Cold-Season Outdoor Tank Conditioner
HeatDoc™ SZP is a first-of-its-kind heating fuel additive that protects outdoor storage tanks, providing efficient, reliable heat when it’s needed most. Formulated for modern, ultra low-sulfur, and biodiesel-blended fuels.



OPT™ Cold-flow Improver
In addition to our all-season and outside tank HeatDoc™ products, we offer a cold-flow improver, OPT M-5. This groundbreaking formula is engineered to lower the pour point of ultra-low sulfur heating oil and ultra-low sulfur diesel, biodiesel, and renewable diesel blends.

“With our heating oil additive, HeatDoc™, we are able to stabilize the fuel over a long period of time—that’s the time of year when the heating system isn’t being used—call it April to October. During this time, moisture can come from the outside into the tank. By stabilizing the fuel with HeatDoc™, we’re able to ensure when the burner finally calls for oil, they have a good quality fuel. Fuel quality is not an issue for us anymore.”
— Mark Brideau – President, Brideau Energy
“Any time we can prevent a fuel-related service call before it happens, it improves the experience for both our customers and our service team.”
— Scott E. MacFarlane, Owner – MacFarlane Energy
“With biodiesel blends (Bioheat® fuel), cold-weather flow and moisture control are two of the biggest variables that can impact reliability. HeatDoc™ SZP helps us deliver fuel that performs more consistently across seasons, which directly supports our goal of reducing avoidable emergency service calls and their associated risks, while taking better care of our customers.”
— Dan Mattice, Reinhardt Home Heating CEO
“With AFS fuel conditioners, we keep our fleet on the road profitably. It’s important to have 24/7 access to high-quality fuel conditioners, testing, and lab services.”
— Kris Lee, Weaver Energy, Lilitz, PA
“We have had very good results using the AFS fuel additives at several locations now. We have been able to double the life of fuel filters, which pays for the product. In addition, we are conservatively seeing a .5% improvement in better fuel mileage. With AFS working with our local fuel suppliers, the results are good. In addition, while it is still early, we seem to have a reduction in fuel-related issues on the newer EPA engines.”
— Fleet Maintenance Manager of a 500+ Power Unit Agricultural Organization
“We’ve been working with AFS for three decades. Paul and his team are extremely knowledgeable about additives—they’re always educating and innovating—but really it’s the energy, enthusiasm, and proactive approach to service that set this strategic partner apart from all others. We feel we couldn’t do better with any other company.”
— Terminal Operations, Global Partners




